Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757788AbaD2OPt (ORCPT ); Tue, 29 Apr 2014 10:15:49 -0400 Received: from numascale.com ([213.162.240.84]:57826 "EHLO numascale.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757771AbaD2OPq convert rfc822-to-8bit (ORCPT ); Tue, 29 Apr 2014 10:15:46 -0400 X-Greylist: delayed 4058 seconds by postgrey-1.27 at vger.kernel.org; Tue, 29 Apr 2014 10:15:46 EDT Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 7.2 \(1874\)) Subject: Re: [PATCH v2 2/5] x86/PCI: Support additional MMIO range capabilities From: Steffen Persvold In-Reply-To: <20140429102013.GA4726@pd.tnic> Date: Tue, 29 Apr 2014 06:07:46 -0700 Cc: Andreas Herrmann , Suravee Suthikulpanit , Bjorn Helgaas , Robert Richter , Myron Stowe , Myron Stowe , Aravind Gopalakrishnan , linux-pci , kim.naru@amd.com, Daniel J Blueman , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86 , "linux-acpi@vger.kernel.org" , LKML , Jan Beulich , Yinghai Lu Content-Transfer-Encoding: 8BIT Message-Id: <3CFA7164-1352-467D-951E-C9F8F35F3163@numascale.com> References: <20140419025308.2408.51252.stgit@amt.stowe> <20140419025323.2408.88764.stgit@amt.stowe> <20140419135219.GC8109@pd.tnic> <20140420075936.GA19672@pd.tnic> <20140426091031.GA10166@pd.tnic> <20140428214036.GA32143@pd.tnic> <20140429073309.GE10997@alberich> <20140429102013.GA4726@pd.tnic> To: Borislav Petkov X-Mailer: Apple Mail (2.1874) X-OutGoing-Spam-Status: No, score=-2.9 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - cpanel21.proisp.no X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - numascale.com X-Get-Message-Sender-Via: cpanel21.proisp.no: authenticated_id: sp+numascale.com/only user confirmed/virtual account not confirmed X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29 Apr 2014, at 3:20 , Borislav Petkov wrote: > On Tue, Apr 29, 2014 at 09:33:09AM +0200, Andreas Herrmann wrote: >> I am sure, it's because some server systems had MMIO ECS access not >> enabled in BIOS. I can't remember which systems were affected. > > Ok, now AMD people: what's the story with IO ECS, can we assume that on > everything after F10h, BIOS has a sensible MCFG and we can limit this to > F10h only? I like Bjorn's idea but we need to make sure a working MCFG > is ubiquitous. > > Which begs the real question: Suravee, why are you even touching IO ECS > provided F15h and later have a MCFG? Or, do they? > Our experience with this is that Fam10h and later have a very well working MCFG setup, earlier generations not so much (hence IO ECS was needed). Cheers, Steffen -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/